WiFi rather slow and weak signal

docbee
 
Posts: 10
Joined: Wed Nov 02, 2016 9:15 am

WiFi rather slow and weak signal

Sat Nov 05, 2016 1:42 pm

I had some tries yesterday to get WiFi running (as a client to my WLAN) and this was a much longer experiment than expected. At first I thought my configs were wrong as I could not get any connection. In the end it turned out that WiFi reception of vocore is rather limited. Singal levels are way below other WiFi clients also located in my room. I guess this has to do with the chip antenna and RF being largely blocked/reflected as being surrounded by metal components of the vocore dock. I did not try with pure vocore chips (without the dock).

Do you also have this experience or does vocore work on par with other wifi clients in your household?

My wireless settings are rather standard. May be there are some options missing to give it a kick forward?

Code: Select all
config wifi-device  radio0
   option type     mac80211
   option channel  'auto'
   option hwmode   11g
   option path   '10180000.wmac'
   option htmode   HT20

Vonger
 
Posts: 555
Joined: Sun Oct 19, 2014 6:00 am

Re: WiFi rather slow and weak signal

Sun Nov 13, 2016 2:40 pm

Hi, it is the openwrt 80211n driver issue, but for normal usage, the speed is enough.
If you want to reach full speed 73Mbps, have to use the close sourced MediaTek wireless driver.

docbee
 
Posts: 10
Joined: Wed Nov 02, 2016 9:15 am

Re: WiFi rather slow and weak signal

Sun Nov 13, 2016 2:57 pm

Thanks for your reply. But speed is not my issue, I don't need much of it. What makes me trouble is that the connection does only come up stable when the vocore dock is oriented in a specific direction on my table. Otherwise even getting a client IP via DHCP and registering the DNS is failing on the vocore. Signal level is at about -66db, which is reasonable good imho.

ifconfig wlan0:
Code: Select all
wlan0     Link encap:Ethernet  HWaddr B8:D8:12:66:26:D7 
          inet addr:192.168.123.245  Bcast:192.168.123.255  Mask:255.255.255.0
          inet6 addr: fe80::bad8:12ff:fe66:26d7/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:3379 errors:0 dropped:0 overruns:0 frame:0
          TX packets:184 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:323317 (315.7 KiB)  TX bytes:25640 (25.0 KiB)


route:
Code: Select all
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
default         192.168.123.1   0.0.0.0         UG    0      0        0 wlan0
192.168.61.0    *               255.255.255.0   U     0      0        0 br-lan
192.168.123.0   *               255.255.255.0   U     0      0        0 wlan0


ping -w 10 www.google.com
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ping: bad address 'www.google.com'


ping -w 10 8.8.8.8
Code: Select all
PING 8.8.8.8 (8.8.8.8): 56 data bytes

--- 8.8.8.8 ping statistics ---
10 packets transmitted, 0 packets received, 100% packet loss


iw dev wlan0 scan
Code: Select all
...
BSS 80:2a:a8:17:9a:06(on wlan0) -- associated
   TSF: 601279649594 usec (6d, 23:01:19)
   freq: 2412
   beacon interval: 100 TUs
   capability: ESS Privacy ShortPreamble ShortSlotTime (0x0431)
   signal: -66.00 dBm
   last seen: 200 ms ago
   Information elements from Probe Response frame:
   SSID: wave
   Supported rates: 1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0
   DS Parameter set: channel 1
   ERP: <no flags>
   Extended supported rates: 24.0 36.0 48.0 54.0
   HT capabilities:
      Capabilities: 0x1ac
         HT20
         SM Power Save disabled
         RX HT20 SGI
         TX STBC
         RX STBC 1-stream
         Max AMSDU length: 3839 bytes
         No DSSS/CCK HT40
      Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
      Minimum RX AMPDU time spacing: 8 usec (0x06)
      HT TX/RX MCS rate indexes supported: 0-23
   HT operation:
       * primary channel: 1
       * secondary channel offset: no secondary
       * STA channel width: 20 MHz
       * RIFS: 0
       * HT protection: non-HT mixed
       * non-GF present: 1
       * OBSS non-GF present: 1
       * dual beacon: 0
       * dual CTS protection: 0
       * STBC beacon: 0
       * L-SIG TXOP Prot: 0
       * PCO active: 0
       * PCO phase: 0
   Extended capabilities: 6
   WMM:    * Parameter version 1
       * BE: CW 15-1023, AIFSN 3
       * BK: CW 15-1023, AIFSN 7
       * VI: CW 7-15, AIFSN 2, TXOP 3008 usec
       * VO: CW 3-7, AIFSN 2, TXOP 1504 usec
   RSN:    * Version: 1
       * Group cipher: CCMP
       * Pairwise ciphers: CCMP
       * Authentication suites: PSK
       * Capabilities: 1-PTKSA-RC 1-GTKSA-RC (0x0000)
...


Any ideas how to pimp WiFi reliability? As is I cannot build a product on this.

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